Home / 283,789.12-391,631.52-156,469.28

Finding the Fourth Proportional to 283,789.12, 391,631.52 and 156,469.28

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Solution

The fourth proportional to 283,789.12, 391,631.52 and 156,469.28 is: 215,929.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,789.12 : 391,631.52 = 156,469.28 : x
  2. Step 2: Convert to fraction form
    283,789.12/391,631.52 = 156,469.28/x
  3. Step 3: Cross multiply
    283,789.12x = 391,631.52 × 156,469.28
  4. Step 4: Simplify right side
    283,789.12x = 61,278,301,959.71
  5. Step 5: Solve for x
    x = 61,278,301,959.71/283,789.12
  6. Step 6: Final answer
    x = 215,929.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.